Hi
Apologies new to mechanics, so may be a silly question. Went to do oil change and found that the filler cap is just resting in place rather than needing unscrewing. There are screw threads on the bottom of the cap but the tube on the engine block it sits in is smooth and too big in diameter too grip these. There is also alot of oil all around the top of engine block. I'm assuming previous owner may not have fitted the correct cap but I wanted to check first in case the engine running created some kind of suction and it was correct.
Thanks in advance for your help.
Apologies new to mechanics, so may be a silly question. Went to do oil change and found that the filler cap is just resting in place rather than needing unscrewing. There are screw threads on the bottom of the cap but the tube on the engine block it sits in is smooth and too big in diameter too grip these. There is also alot of oil all around the top of engine block. I'm assuming previous owner may not have fitted the correct cap but I wanted to check first in case the engine running created some kind of suction and it was correct.
Thanks in advance for your help.